The second option because the purpose of a public service announcement is to raise awareness on an important issue.
Answer:
I believe that the difference is that space is like when you have a desk and there is still enough volume to place something inside and outer space is the universe (outside the Earth's atmosphere , that is the area where there are stars planets etc...)
The main idea of the following passage from ''In Commemoration: One Million Volumes'' is C. The stories told by los viejitos inspired Anaya's love of words and book. Tone and writing style of this excerpt express an inspiration of someone, in this case - Anaya's admiring of words and book.